1644289668

Names of 1644289668

• Cardinal: 1644289668 can be written as One billion, six hundred forty-four million, two hundred eighty-nine thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.644289668 × 10⁹

Factors of 1644289668

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 198

Divisors of 1644289668

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 63 73 84 98 113 126 146 147 196 219 226 252 292 294 339 438 441 452 511 588 657 678 791 876 882 1017 1022 1314 1356 1533 1582 1764 2034 2044 2373 2628 3066 3164 3577 4068 4599 4746 5537 6132 7119 7154 8249 9198 9492 10731 11074 12769 14238 14308 16498 16611 18396 21462 22148 24747 25538 28476 32193 32996 33222 38307 42924 49494 49833 51076 57743 64386 66444 74241 76614 89383 98988 99666 114921 115486 128772 148482 153228 173229 178766 199332 229842 230972 268149 296964 346458 357532 404201 459684 519687 536298 625681 692916 804447 808402 932137 1039374 1072596 1212603 1251362 1608894 1616804 1864274 1877043 2078748 2425206 2502724 2796411 3217788 3637809 3728548 3754086 4850412 5592822 5631129 6524959 7275618 7508172 8389233 11185644 11262258 13049918 14551236 16778466 19574877 22524516 26099836 33556932 39149754 45674713 58724631 78299508 91349426 117449262 137024139 182698852 234898524 274048278 411072417 548096556 822144834 1644289668
• Sum of all divisors σ(n): 4944984954
• Sum of proper divisors (its aliquot sum) s(n): 3300695286
• 1644289668 is an abundant number, because the sum of its proper divisors (3300695286) is greater than itself. Its abundance is 1656405618

Bases of 1644289668

• Binary: 1100010000000011101111010000100₂
• Hexadecimal: 0x6201DE84
• Base-36: R6YU10

Squares and roots of 1644289668

• 1644289668 squared (1644289668²) is 2703688512291550224
• 1644289668 cubed (1644289668³) is 4445647086251287037026285632
• The square root of 1644289668 is 40549.8417752771
• The cube root of 1644289668 is 1180.3010024037

Scales and comparisons

• 1,644,289,668 seconds is equal to 52 years, 14 weeks, 5 days, 3 hours, 7 minutes, 48 seconds.
• To count from 1 to 1,644,289,668 would take you about one hundred four years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 1644289668 cubic inches would be around 98.4 feet tall.

Recreational maths with 1644289668

• 1644289668 backwards is 8669824461
• The number of decimal digits it has is: 10
• The sum of 1644289668's digits is 54
• More coming soon!